越冬黑颈鹤的种群结构合理。
The population structure of the wintering cranes is reasonable.
种群结构因时间、地点而异。
目的：研究云南省大理市小兽类种群结构。
Objective: To study the population structure of the small mammals in Dali, Yunnan.
对渔业种群结构的更深入了解因此具有至高无上的重要性。
Better understanding of the population structure of the fishery is therefore of Paramount importance.
病毒WMV - 2对棉蚜种群结构也有影响。
Further, WMV-2 also changed the population structure of aphids.
对大明山云贵山茉莉种群结构和动态进行研究。
This paper deals with the structure and dynamics of H uodendron biaristatus population in Daming Mountain.
目的调查大理州洱源县小兽类哺乳动物种群结构。
Objective To study the population structure of small mammals in Eryuan Dali.
结论长期持续使用抗凝血剂能导致鼠类种群结构的变化。
Conclusion Long term application of Anticoagulant rodenticides can result in the variation of community structure of commensal rodents.
目的用分子技术调查中国间日疟原虫种群结构与地理分布。
Objective To investigate the population constitution and geographical distribution of Plasmodium vivax in China using molecular technique.
遗传运算参数中的交叉和变异概率随种群结构特征动态变化。
And the probability of crossing and aberrance would be dynamically changed with the structure of population.
目的探讨长期持续应用抗凝血剂灭鼠对鼠类种群结构的影响。
Objective to inquire into the influence of continuous application of rodenticides on the community structure of commensal rodents.
冲击的对象主要是植物、野生动物、土壤、水体、大气和种群结构等。
The objects of the impacts mainly include plant, wild animal, soil, water, atmosphere and population structure, etc.
现代犬种是一个独特的种群结构的一部分，是经过多年人工选择育成的。
Modern dog breeds are part of a unique population structure, having been selectively bred for many years.
元宝山冷杉不同群丛元宝山冷杉种群结构的差异反映了群落的演替过程。
The different population structures of Abies yuanbaoshanensis in different associations reflected the process of succession of community.
本文采用动态可比性林木分级法，研究了东北东部天然赤松林的种群结构。
The method of dynamic comparable tree classification was introduced to study the population structure of natural Japanese red pine forest in Northeast China.
对福建省建阳市书坊乡贵溪村的天然檫树种群结构和空间分布格局进行研究。
The population structure and spatial distribution patten of Sassafras tzumu have been studied in this paper.
并通过对其生长、残存和繁殖等统计学参数的描述，揭示了种群结构和种群动态。
Population size structure and population dynamics were elucidated with some statistical parameters, such as growth, survival and reproduction etc.
通过对乌鲁木齐河底栖动物种群结构的分析，利用生物指数评价乌鲁木齐河水质状况。
The water quality of Urumqi river was evaluated using biological index. Which is on the basis of analysis of the population structure of benthic animal in Urumqi river.
对兴隆山马麝资源的种群密度、种群数量和种群结构以及负增长原因进行了研究分析。
The population numbers, densities, structure and reasons of negative increasing of Moschus chrysogaster in Xinglong Mountain were studied in the paper.
这种种群结构在空间上的变异可能是被栎瘿蜂开发的资源尤其是栎树寄主在斑块上出现变异的反映。
This spatial variation in population structure may be the result of variation in the patchiness of resources exploited by gallwasps, particularly host oak plants.
本研究对蠡湖鲢鳙鱼的种群结构及其生长特性进行了调查，旨在为保护和科学利用其渔业资源提供依据。
This study was mainly about the growth characteristics and community structure which will provide evidence for protection and utilization of fishery resources in Lihu lake.
提出用水泥以及沥青大规模地覆盖土壤对于土壤，特别是土壤表层的微生物种群结构将会造成改变的问题。
A problem is coating the earth with cement or bitumen on a large scale that would change the horde structural of the microbe in soil particularly in the surface layer of soil.
以上结果表明，可以应用TCS来降低活性污泥工艺中的剩余污泥产量，但对污泥的种群结构有一定的影响。
These results suggested that it might be possible to apply TCS in activated sludge systems to reduce the excess sludge production but it might influence the population in sludge.
以底栖动物作为底层水环境和底泥环境长期影响的指标，利用生物指数和种群结构的变化对底质进行评价和分析。
The ground base was evaluated and analysed by using biological index and variation of population of benthon which are effected by bottom water and mud environment.
种群的死亡过程和繁殖过程使种群平均密度有较明显的波动，但对种群总体水平无明显影响，种群结构也无明显变化。
The death and reproduction of the population make the mean density fluctuate but do not obviously change the overall level of population number and the population structure.
鸟类的鸣声中包含有丰富的生物学信息，研究鸣声对于了解鸣声与行为的关系、鸟类的种群结构及种属分类具有重要的实际意义。
Bird songs and calls as one of the most important features, which contain abundant biological information, are vital for the research of Avi-behavior, bird population structure and classification.
第一个和第三个可能是生物群落结构的关键因素；也就是说，所有的生物种群都生活在一起，并且它们可能在一个特定的区域内相互作用。
The first and the third can be key factors in the structure of a biological community; that is, all the populations of organisms living together and potentially interacting in a particular area.
第一个和第三个可能是生物群落结构的关键因素；也就是说，所有的生物种群都生活在一起，并且它们可能在一个特定的区域内相互作用。
The first and the third can be key factors in the structure of a biological community; that is, all the populations of organisms living together and potentially interacting in a particular area.
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